You can get1,110 lives (One thousand, one hundred and ten) in World 1-2 by passing the first Koopa and making your way to the area with a second Koopa and a Goomba on a slightly raised platform. Stompl the Goomba, then jump on the green Koopa and steal its shell. Hop up onto the platform with the Goomba and face the rear wall while standing in front of the three brick blocks (press the D-pad UP to aim directly at the wall). Toss the Koopa and then immediately jump. Don't press anything else and you will bounce off the Koopa shell and never touch the ground while it bounces infinitely off the rear wall. This will result in unlimited 1-Ups so long as you don't move! Note: You'll need to return to the level twice to fill up your lives to 1,110 because the time will run out once you hit 600 or so on your first go.